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DMSO ACS Spectrophotometric Grade Product Sheet

The Perfect Choice for the Laboratory

DMSO ACS Spectrophotometric Grade is Dimethyl Sulfoxide which conforms to the American Chemical Society’s (ACS) 9th Edition Specifications for Reagent Chemicals. In addition to the normal parameters related to purity, this monograph specifies maximum UV absorbance at five wavelengths. This grade is the preferred solvent for any form of UV spectrophotometric analysis, due to its guaranteed analytical clarity.

DMSO ACS Spectro

Select DMSO ACS Spectrophotometric Grade as:

HPLC Mobile Phase Component
The low UV limits of DMSO ACS Spectrophotometric Grade result in minimal interference when using UV detectors in HPLC. The polarity of DMSO can be used to modify the solvent strength of HPLC eluent in reverse phase mode. Applications in Gel Permeation Chromatography (GPC) also exist.


General Purpose Analysis Solvent
The nearly universal solvent properties of DMSO allow it to effectively dissolve difficult materials, including many polymers and inorganic materials. DMSO ACS Spectrophotometric Grade is suitable for general UV and visible spectrophotometry, IR spectroscopy, and all methods that demand solvent purity and low levels of UV absorbance.


Solvent for High Throughput Screening and Compound Storage
High purity, low moisture content and consistent UV absorbance, along with the ability to readily dissolve a wide range of compounds, make this grade ideal for compound storage applications.

Representation Specification

Representative Test Methods Values

Assay, (% Min. by GLC)


Water (% Max. by KF)


Evaporation Residue, (% Max.)


Titrable Acid, (Max. meq / g)


UV Absorbance Wavelength (Max.)


350 – 400 nm


330 nm


 310 nm


 290 nm


270 nm


This illustration does not constitute the specification. Specifications are available upon request.

DMSO ACS Spectrophotometric Grade at a Glance

Physical Properties Data

Density, at 25°C


Boiling Point (atmos. pressure)


Viscosity @ 20°C (68°F)


Refractive Index n20 D @ 20°C (68°F)


Surface Tension @ 20°C (68°F)

 43 dynes/cm

Specific Heat @ 25°C (77°F)

 0.45 cal /g/ ̊C
 Heat of Vaporization @ 25°C (77°F)  162 cal/g
 Electrical Conductivity @ 20°C (68°F)  3 x 10-8/ohm/cm
 Dielectric Constant @ 20°C (68°F)  48

Dipole Moment

4.3 D

Vapor Pressure @ 25°C (77°F)

 0.6 mm Hg


Soluble in water, light alcohols and diethyl either.


CAS: 67-68-5

EINECS: 200-664-3

HMIS and NFPA Hazard Ratings:  Health – 1, Flammability – 1, Chemical Reactivity – 0


Bottles : 1 & 4 liter

Drums : 500 pound HDPE

The information in this bulletin is based on information available to us and on our observations and experiences. However, no warranty is expressed or implied regarding the accuracy of this data, the results to be obtained from the use thereof, or that any use will not infringe any patent. Each user must establish appropriate procedures for off-loading, handling, and use of the product(s). Since conditions for use are beyond our control, we will make no guarantee of results, and assume no liability for damages incurred by off-loading, handling, or use of the product(s). Nothing herein constitutes permission, or recommendation to practice any invention covered by any patent without license from the owner of the patent.

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